REVISION OF THE OECOPHORIDAE — CLARKE 253 



CHAMBERSIA HAYDENELLA (Chambers) 



Plate 1, Figuke 3 



Blepharocera haydenella Chambers, U. S. Geol. Geogr. Surv. Terr. Bull. 3, p. 

 144, 1S77; Bull. 4, p. 132, 1878.— Fletcheb, Mem. Dept. Agr. India (Ent. 

 Ser.), vol. 11, p. 33, 1929. 



Chambersia Jianjdenella (Chambers) Riley, in Smith, List of the Lepidoptera of 

 Boreal America, No. 5547, 1891. — Busck, m Dyar, U. S. Nat. Mus. Bull. 52, 

 No. 5931, 1903. — Kearfott, in Smith, Check list of the Lepidoptera of 

 Boreal America, No. 6477, 1903. — Babnes and McDunnough, Check list of 

 the Lepidoptera of Boreal America, No. 6503, 1917. — FLEn:cHER, Mem. Dept. 

 Agr. India (Ent. Ser.), vol. 11, p. 44, 1929. 



Borlhausenia haydenella (Chambers) Barnes and Busck, Contr. Lepid. North 

 America, vol. 4, p. 235, 1920. — Braun, Proc. Acad. Nat. Sci. Philadelphia, 

 vol. 73, p. 12, 1921. — Meyrick, in Wytsmau, Genera insectorum, fasc. 180, p. 

 40, 1922.— McDunnough, Can. Ent., vol. 59, p. 271, 1927.— Gaede, in Bryk, 

 Lepidopterorum catalogus, pt. 88, p. 59, 1938. — McDunnough, Check list 

 of the Lepidoptera of Canada and the United States of America (Part 2, 

 Microlepidoptera), No. 8370, 1939. 



Labial palpus ochreous-white ; second segment suffused with light 

 fuscous outwardly and mottled inwardly ; third segment suffused with 

 fuscous outwardly. Antenna light fuscous; basal segment ochreous- 

 white above. Head, thorax, and ground color of fore wing grayish- 

 fuscous, strongly irrorated with white; a spot at base of costa, a 

 large spot at the center of the wing and another at the end of the 

 cell, fuscous; at apex a large fuscous spot connected with a similar, 

 but smaller spot at tornus, by a narrow fuscous band around termen 

 (all the dark markings are more or less indistinct and fused with 

 the ground color) ; cilia grayish fuscous. Hind wing fuscous ; cilia 

 grayish fuscous. Legs ochreous-white strongly suffused with light 

 grayish fuscous. Abdomen shining grayish fuscous ; silvery beneath. 



Male genitalia. — Harpe short, broad ; costa strongly convex; cucullus 

 rounded; sacculus moderately broad, lightly sclerotized. Anellus a 

 small sclerotized plate with strong, curved, pointed, lateral processes ; 

 the lateral processes are very broad basally. Aedeagus slender, 

 slightly curved, weak ; vesica unarmed. Vinculum rounded. Gnathos 

 broad, with a short, sharp point and median posterior protuberance. 

 Uncus pointed. 



Female genitalia. — Genital plate broad, membranous anteriorly and 

 in middle. Ostium large, broadly oval. Ductus bursae short ; incep- 

 tion of ductus seminalis slightly posterior to middle. Bursa copula- 

 trix oval; sign um a small, weakly sclerotized, toothed plate. 



Alar expanse, 12-17 mm. 



Type. — In the Museum of Comparative Zoology, Cambridge, Mass. 



Type locality. — "Colorado." 



Food plant. — Unknown. 



Distribution. — From Colorado northward to Alberta and westward 

 to Vancouver Island, British Columbia. 



